Your Query returns 21 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CSNK2A1BC0088129606CK2A2    CSNK2A2    115440
CSNK2A1NM_0018969606CK2A2    CSNK2A2    115440
Csnk2a1NM_00778810090Csnk2a1-rs4    115440
CSNK2A1S723939606115440
Csnk2a1NW_04765810116
CSNK2A1BC0535329606CK2A1    CKII    115440
CSNK2A1BC0116689606CK2A1    CKII    115440
CSNK2A1AY4191279606115440
CSNK2A1AY4191289598
CSNK2A1AY41912910090115440
CSNK2A1AL0497619606115440
CSNK2A1NM_0018959606CKII    CK2A1    115440
CSNK2A1NM_1775599606CKII    CK2A1    115440
CSNK2A1NM_1775609606CKII    CK2A1    115440
CSNK2A1NM_1746359913
Csnk2a1NT_03921010090115440
Csnk2a1BC02614910090115440
Csnk2a1BC06074210090115440
CSNK2A1AY33573132630
CSNK2A1NT_0113879606115440
Csnk2a1NM_05382410116

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002